Electric-lighting fixture



Aug. 12, 1930.

H. DOLIER, JR

ELECTRIC LIGHTING FIXTURE Filed Oct. 24, 1925 INVENTOR Hen/y fl'fl/Ae/j Jr: BY M ATTORNEY Fatented Aug. 1 2 1 930 PATENT OFFICE.

; I D-ST TES HENRY DOLIER, JR., 0F BRIDGEPORT, CONNECTICUT ELECTRIC-LIGHTING FIXTURE Application 'filed October 24, 1925. semi No. 64,512.

10 ject of the inventionbeing to provide such suspensionmeans in the form of a chain provided with means to permit attachment thereto, and support thereby,'both of the lamp fixture proper. and of theconventional canopy ordinarily used to mask the. outlet box and the mechanical andelectrical connections.

- Another object of .the invention is to pro vide,.in combination. with such av chain support, .a tubular covering which surrounds the chain. foroitsentire length, or a portion of its length, or which may be formed in a plurality of sections; substantially covering the chain but interrupted, atintervals to impart flexibility, and also to give the supporting member a more graceful-,.appearance by revealing links of the chain at intervals.

The invention comprises also the. manufacture of such a chain support with insulated wires of appropriate length, combined therewith and enclosed by; the {aforesaid tubular covering, and constituting in combination a separable entity which can bev made and sold as an article of I manufacture for use with existing fixtures, taking the place of conven- 5 tional pipes and fittings which asnow constructed have ;a multiplicity of threaded joints and many cutting edges which .tend to impair the insulation-of the wires, passing therethrough. I i y g Still; another 7 object ofthe invention is to facilitate the use of the improvedsuspend- .ing means by' providing a wire hook or hanger,- preferably of the same general material and construction as the chain,-andxwhich can be screwed upon existing threaded studs orparts, ofoutletboXesin place of the threadedcastings, 'hickeysand similar devices at present used forfsimilar purposes. 1 A cognate obj ect of" the invention is to pro vide. 1; Similar hook -or hanger .in combination with a supportingmember having a stud formed with a special thread adapted to facilitate the connection therewith of the wire hanger. t

The various features of the invention will be illustrated and described fullyinthe accompanying drawings and specification and pointed out on theclaims;

In the drawings, 7 Fig. 1 shows in side elevation, partly in section, an electric lamp fixture in the construction of which this invention has been embodied. V

Fig. 2 is an elevation of a suspending device for such fixtures embodying a chain, insulated conductors and a covering tube, constituting anentityapplicable to fixtures of the type shown in Fig. 1.-

Fig. 3 is-a similar view ofa modification. F ig. is'a view partly in elevation and partly in section, on an enlarged scale, of the suspending hook or hanger and associated parts, shown inFig. 1.

Fig. 5 1s asimilarxview of a modified form of hook or hanger and support therefor. V

Fig. 6. is a cross-section on the line 6'6.

. In the illustrated embodiment, referring to Fig. 1, the reference character 1 designates an electrical lamp,an d2 its socket, with a shade 3 carried therefrom by a collar 4, these parts being of conventional or suitable construction, as are also the canopy 5 with its set screw 6 and the electrical conduit box or member 7 and electrical conductors 8 entering the ceiling box through a conduit 9; also the threaded stud 10 carriedby the box 7 which serves as the main support for the fixture,

In pursuance of the invention, I have shown a chain formed of links 11, of'any suitable shape, with whichare associated conductors 12,.enterin'g the socket2at one end .of the chain, and preferably terminating at the other end of the. chain in an insulating con- .nector having two parts 13 and-l4,aclapted to be separated to permit disconnectionv of the electrical circuit at the point 15, and preferably of such size and shape as ,toadapt the connector to be covered by a canopy 5.,

Inaccordance Withanother important feature of, the invention, I have shown at 16 .a

hook or hanger, made of wire and formed into coils 17 adapted to be screwed upon the threaded stud 10. This stud and hanger are shown in detail in Fig. 4 from which it will be seen that the coiled portion 17 of the hanger is threaded internally at 18, this coiled portion being preferably flattened somewhat to increase the bearing surface of the threads.

Fig. 5 illustrates a modification of the hanger and its stud, the latter being formed with a special thread 19 so that the coiled portion 20 of the hanger 21 may be screwed thereupon without cutting a thread upon the interior face of the coils, and the coils will be somewhat spread by being screwed upon ghe stud, in order to resist displacement thererom.

In pursuance of another feature of the invention, I have provided at 22 a section of 'tube, preferably of metal or other relatively inflexible material, serving as a bearing for the set screw 6' of the canopy 5, and of sufficient length to permitthe canopy to be ada justed thereon slidingly, and also to permit thecanopy to be lowered sufliciently to give access to the connector 13 and also to permit detachment of the lighting fixture as a whole by removing the uppermost link 11 from the hook'16.

The tubular member 22 may be of such a diameter as to fit snugly on the chain 11, so as to avoid displacement thereon by gravity, or it may be spot-welded to the chain as indicated at 23, or otherwise secured in place relatively to the chain. It is preferably free from threading or sharp edges and may be beaded as at 24 to afford a round, non-abrasive exit for the insulated conductors 12 at each end of the tube.

In Fig. 2 I have shown a chain 11 similar to the chain 11 already described, and surrounded throughout its length by a tube 25 which encloses also insulated conductors 26,

I and I preferably form the chain with a link 27 at its lower end, of round contour and sufficient in diameter to prevent longitudinal displacement of the tube 25, this link being provided with a transverse coil 28, which is designed to enter the part 29 of a lamp socket such as that shown in Fig. 1, the material of this cap or socket portion being preferably stamped, to engage the coil 28 in such a manner as to connect the link with the cap of the socket and thus furnish a mechanical support for a socket, lamp and shade like that shown in Fig. 1.

Similarly the lower link 30 of the chain shown in Fig. 1 may be formed with such a coil, indicated by the dotted lines 31. p

In 3 I have shown a series of tubes 33 surrounding a chain 34 which is provided at intervals 35 with round links intervening be tween the tubular sections 33, and in combination with this structure I have provided insulated conductors 36, the whole constituting a separable supporting entity or device adapted to be manufactured and supplied as an article of manufacture for use in the support of electric or other fixtures. This device also is shown as having a round link 37 formed with a supporting coil 38, similar in structure and purpose to the link 27 and coil 28 illustrated and described with reference to Fig. 2,

Fig. 6 is a transverse section on the line 6-6 of Fig. 3, showing an a larger scale the manner in which the links of the chain divide the space between the chain and tube, afi'ording separate longitudinal channels for conductors 40, of which four may be used, as shown.

I claim:

1. An electric light fixture comprising a chain, having electrical conductors associated therewith, a tube enclosing a portion of said chain and conductors, means to secure said tube upon said chain, a canopy mounted sli'dingly on said tube, and means to secure said canopy in adjusted position upon said tube, encasing a supporting portion of said chain, and associated immevably therewith.

2. An electric light fixture comprising a tube, a chain enclosed by said tube with spaces to receive electrical conductors, and a canopy mounted on said tube, said chain being adapted to support said tube and conductors against tensile strain, said chain, tube and conductors constituting a unitary structure adapted to be hung readily upon an overhead support by a hooking action, and to be removed readily therefrom likewise, said conductors having a separable electric connector adapted to permit ready electrical disconnection of said fixture when so removed. .1 I

3. In an electric lighting fixture, the combination with an electrical conduit member provided with a threaded stud, and having means by which it may be attached to a ceil ing, of a hanger formed of wire coiled to screw upon said threaded stud and bent to form a hook, and a chain formed of links one of which is engaged removably with said hook, the free end of said chain having a link adapted to support an electrical fixture, a tube enclosing said chain in the vicinity of said hanger, and a canopy mounted on said tube and adjustable along said chain into position to mask said hanger, stud and conduit member.

4:. In an electric lighting fixture, the combina-tion with an electrical conduit member provided with a threaded stud, and having means by which it may be attached to a ceiling, of a hanger formed of wire coiled to screw upon said threaded stud and bent to form a hook, and a chain formed of links one of which is engaged removably with said hook, the free end of said chain having a link adapted to support an electrical fixture, a tube enclosing said chain in the Vicinity of said hanger, and a canopy mounted on said tube and adjustable along said chain into 5 position to mask said hanger, stud and conduit member, said chain being freely removable from said hanger With said tube and canopy.

'5. A support for lighting fixtures of the type characterized by a member adapted to be secured to the ceiling and having a hanger to receive a dependent chain adapted to support a lighting unit such as an electrical lamp and its associated parts, said fixture support being further characterized by a chain part adapted to be, readily connected removably with said hanger by a hooking action, a tube mounted on said chain part and adapted to permit ready connection and g0 disconnection by said chain part with respect to said hanger, and a canopy mounted slidingly on said tube.

6. An electric light fixture support comprising a flexible chain, a tube enclosing an 5 intermediate portion of said chain and adapted to afford a rigidbearingforacanopy, a canopy mounted slidingly upon said tube, and means to fix said canopy in adjusted position thereon. In testimony whereof, I have signed this specification.

HENRY DOLIER, JR. 

